METHOD OF CORRECTING MEASUREMENT RESULTS USING TENSOMETRIC BRIDGE SENSOR WITH INSTRUMENTATION AMPLIFIER Russian patent published in 2012 - IPC G01R17/06 

FIELD: physics.

SUBSTANCE: additive and multiplicative error components are periodically determined based on command unit signals, for which the high potential vertex of the supply diagonal of the tensometric bridge sensor is disconnected from the power supply and storage devices record additive and multiplicative error values from the output of the instrumentation amplifier. Normal operating measurements are then taken with the bridge power on and the values of additive and multiplicative error components stored earlier are eliminated from the value of the signal measured in normal mode. Switching from the mode of determining the additive and multiplicative error component values to the normal measurement mode is carried out by the control unit through a given temperature change interval of measurement channel components, e.g., a sensor, or a given time interval.

EFFECT: excluding systematic additive and multiplicative error components from the operating measuring signal.

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